Backshaver brush



FIG. 1 is a front perspective view of an ornamental design for a backshaver brush;

FIG. 2 is a rear perspective view of the design thereof;

FIG. 3 is a front view of the design thereof;

FIG. 4 is a rear view of the design thereof;

FIG. 5 is a first side view of the design thereof;

FIG. 6 is a second side view of the design thereof;

FIG. 7 is a top view of the design thereof;

FIG. 8 is a bottom view of the design thereof; and,

FIG. 9 is a front perspective view of the design thereof in use with an exemplary backshaver handle.

The broken lines shown in the figures depict portions of the backshaver brush that form no part of the claimed design. 

CLAIM The ornamental design for a backshaver brush, as shown and described. 